Challenges in Mobile Multimodal Application Architecture W3C - PowerPoint PPT Presentation

Challenges in Mobile Multimodal Application Architecture W3C Multi-modal Workshop, November 2007, Fujisawa, Japan Toshihiko Yamakami Toshihiko.Yamakami@access-company.com CTO Office, ACCESS ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.1/12

Outline • History of Mobile Multimodal Industrial Efforts • Landscape of Mobile Multimodal Applications • Challenges • No Conclusion ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.2/12

History of Mobile MM • Industrial Efforts • WAP Forum started to investigate MM in 2000 • OMA (following WAP) agreed an work item in 2002(MMMD) • OMA completed its architectural work in 2005 • OMA decided to terminate its work without Tech specs in 2006 • (Pending termination in OMA) MMMD: MultiModal and MultiDevice ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.3/12

Wireless Telephony • Expecting rapid shift towards mobile data services 8000 500 PC PC 400 mobile mobile 6000 Users (Million) 300 4000 200 2000 100 0 0 China USA Russia India Brazil Japan 2000 2001 2002 2003 2004 2005 2006 Country Top Subscribers PC and Mobile In Japan ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.4/12

Landscape • Capability Improved for MM • Increased Network Bandwidth (IMT-2000 users 81% in Japan) • CPU and Memory Increased (sub-GHZ, GByte) • Linux emerged (LiMo, Open Handset Alliance, ...) ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.5/12

Retrospective View (general) • Mobile Data Services need Spiral Evolution • Interaction among Services, Content, and End-users • Spiral allows gradual capability improvement through use • Two-Wheel Efforts necessary • Capability Evolution • Ease of Authoring • Many believed that mobile fits MultiModal ... ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.6/12

Obstacles in Mobile MM Road • Challenges in Encapsulation • Challenges in multimodal Contexts • Challenges in Content Authoring ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.7/12

Underlying Platforms • tight-bound-ness to the underlying capabilities • failed generalization bypassing the real issues • failed design without specific underlying knowledge • rapid progress of env threats the higher-layer standardization • How can we unbind these bonds? ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.8/12

General vs. Specific • Bridge too far? • Single application with multimodal interactions with a user • Single application with different modal interactions to different users • Single application with single modality with a user at a time (different contexts provide different modal interactions with the user) • Gap to be filled between general framework and workable solution • Less support from the PC Internet ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.9/12

Authoring • Intuitive Difficulties? • Who are rigorous authors? • Authoring systems support? • Authoring is always a pain ... • Obstacles for general MM • Obstacles for mobile MM (more authoring and usability test pains) • Event sequence among multiple entities will be a nightmare ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.10/12

Retrospective View (case) • Contradicting Observations • Sustained Enthusiasm • Little or Isolated Contributions ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.11/12

Conclusion • No Conclusion • No Silver bullet to the Challenges (seems like) • Industry will be pleased to see mobile Multimodal Apps ACCESS Proprietary c � ACCESS 2007 Challenges in Mobile Multimodal Application Architecture – p.12/12